"I am biased to my show as a whole but it is still very entertaining"

Rob Mariano is expressing his opinion on his show, which he is most likely associated with producing or starring in. He is acknowledging that he is biased towards his program, however he still believes it is amusing. This suggests that he is confident in the quality of the program, in spite of his individual participation. He is likely pleased with the work he and his group have actually taken into the show, and he thinks that it is worth seeing. His statement likewise suggests that he is aware of his bias, and that he is not trying to deceive viewers into believing the show is better than it is. He is just expressing his opinion that the show is amusing, which audiences should give it a possibility.